Returning once again to our table top example of a horizontal mass on a low-friction surface with m = 0.254 kg and k = 10.0 n/m with damping characterized by y = 0.628 (1/s). if fo = 0.5 n, calculate a and d for the following values of w: 0.628 rad/s, 3.14 rad/s, 6.28 rad/s, and 9.42 rad/s.

Cells in the nervous system have a potential difference of 70 mv across the cell membrane separating the interior of the cell from the extracellular fluid. this potential difference is maintained by ion pumps that move charged ions across the membrane. is this an emf? select the correct answer and explanation. 1)no. the ion pumps cannot separate charges; thus, they cannot create a potential difference. 2)yes. the ion pumps cannot separate charges, but they still can create a potential difference. 3)yes. the ion pumps can actively separate charge; thus, they can create a potential difference. 4)no. the ion pumps can separate charges, but they cannot create a potential difference.

The star nearest to our sun is proxima centauri, at a distance of 4.3 light-years from the sun. how far away, in km, is proxima centauri from the sun?

What is the moment of inertia i of this assembly about the axis through which it is pivoted? express the moment of inertia in terms of mr